Fall Is the Perfect Time to Clean Your Air Ducts

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Why is Fall the perfect time to clean your air ducts? Well, there are a couple of good reasons. The first is you want your ducts to be working at high efficiency in the winter while you’re stuck inside your home or office. Indoor air quality is more important than ever at this time of year to avoid a buildup of dust, dander, debris, and contaminants like mold, fungi, and bacteria-  that you could be breathing in. Clean air ducts mean fresh, clean air! 

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The second reason to clean your air ducts in the Fall is energy savings. As were just about to enter the Winter season with high-energy costs to heat our homes and offices, why pay more than we have to? Dirty air ducts have to work harder to maintain your temperature settings. That translates to you spending more money on your heat bill. Clean air ducts use less energy and therefore save you money!

Aspen Air Duct Cleaning Services are experts at diagnosing and eliminating indoor air quality problems for both commercial and residential properties. We provide HVAC Duct Cleaning, HVAC Anti-microbial Applications, Mold Remediation, and Aeroseal Duct Sealing.

On the commercial side, we work in churches, retail and commercial buildings, and expansive HVAC systems of high-rise office buildings and industrial complexes. On the residential side, we diagnose and eliminate indoor air quality problems in private homes, high-rise apartment complexes, and condo associations. We also clean out clothes dryer vents to eliminate a commonly overlooked fire hazard.

Aeroseal – the Latest in Duct Cleaning Technology

Aspen Air Duct Cleaning is an approved Aeroseal Dealer, offering Aeroseal Duct Sealing, a patented breakthrough technology that tackles leaks from the inside out. Aeroseal software allows our technicians to accurately measure the duct leakage in residential homes and commercial buildings. The Aeroseal process puts escaping air under pressure and causes polymer particles to stick first to the edges of a leak, then to each other until the leak is closed.

The Aeroseal process:

  • Reduces up to 90% leakage
  • Fixes pressurization issues
  • Decreases fan horsepower
  • Extends equipment life

The typical commercial building in America loses 25% to 40% of its heating and cooling energy through the ductwork. Aeroseal reduces up to 90% of that duct leakage. And, our commercial duct sealing system will reduce heating and cooling costs by up to 20%.

Ensure the maximum health and efficiency of your HVAC system with professional air duct cleaning!

Source: Aspen Air Duct Cleaning

Aspen Air Duct Cleaning is an approved Aeroseal Dealer, licensed and ensured, and a member of the National Air Duct Cleaners Association (NADCA) and National Organization of Remediators and Mold Inspectors (NORMI).

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs. Or email info@aspenenvironmentalservices.com.

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8 Low- and No-Cost Ways to Save Energy in Buildings

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In an article appearing in a recent issue of Engineering Green Buildings, a newsletter from HPAC Engineering, author Kenneth M. Elovitz identifies several “low-hanging fruit” ideas for budget-minded facility managers looking to cut costs associated with energy use in commercial buildings.

As the author points out, new building projects provide energy-saving opportunities related to design and construction. Existing buildings, however, have a variety of low- and no-cost energy saving retrofit options worthy of consideration as well. Below is a summary of several ideas shared in the piece as well as one added suggestion. 

  1. Analyze Building Energy Use
  2. Reduce Water Pressure or Use Low-Flow Faucets and Showerheads
  3. Reduce Boiler Steam Pressure
  4. Repair Damaged or Missing Insulation
  5. Install Lighting Controls
  6. Consider “Smart” Power Strips
  7. Reset Hot/Chilled-Water Temperature
  8. Seal Leaky Ductwork

We couldn’t agree more with #8! Recent research by the U.S. Department of Energy, McKinsey & Company and others has shed a new spotlight on the major role that air distribution systems play in the energy efficiency of commercial buildings.

It’s not that duct leakage is anything new. It’s been around for about as long as commercial buildings themselves. But the problem has been all but ignored for one simple reason: there were no viable solutions. Few building owners were willing to undergo the demolition, disruption and expense associated with traditional duct sealing methods.

Faced with this reality, scientists at Lawrence Berkeley National Laboratory, with funding by the U.S. DOE, the EPA, and others, focused efforts on finding an answer. They were determined to develop a viable, cost-effective way to seal energy-robbing leaks that currently exist in the miles of ductwork hidden behind the infrastructure of today’s buildings.

The result of their efforts was a new technology that offers a completely different approach to duct sealing – a technology that works from the inside out to seal leaks. Administered as an aerosol mist that is injected and blown into the inside of ductwork or ventilation shafts, the sealing technology can quickly and non-disruptively seal leaks throughout the entire duct system.

In 2008, Steven Winters Associates (SWA), armed with this and other innovative air flow management technologies, began work on a project that would have engineers rethinking ventilation retrofitting and energy saving strategies. Combining these new technologies, SWA engineers completely rehabilitated the duct system of a 55-year old multi-family apartment building in West Caldwell, New Jersey, saving the building owners an estimated $29,000/year in reduced energy costs.

Following the success of this and other similar projects, the use of aerosol-based duct sealing has surged in retrofit projects around the globe. Thousands of commercial buildings – from hospitals in Dubai to condos in Australia, to schools, office buildings and hotels across the United States – have used Aeroseal technology to realize energy savings and improve the overall performance of their commercial buildings.

Now that a viable, cost-effective means of sealing duct leaks is readily available, we are also seeing a tightening of standards and a change in the rules related to energy conservation. Top government regulatory agencies and industry groups have begun to include duct sealing on the top of their list of low-cost opportunities for energy savings.

The choices for energy-saving measures (ECMs) in commercial real estate today are vast. Some cost hundreds of thousands of dollars – others little or nothing. Thanks to innovative advancements in duct sealing technology, sealing duct leaks has earned its place as a new low-hanging fruit in the arsenal of those looking to reduce the operational costs of their commercial buildings.

Source: Aeroseal

Aspen Air Duct Cleaning is a certified Aeroseal Dealer, licensed and insured. Please contact Aspen Air Duct Cleaning at 1-800-931-6653 for professional air duct and dryer vent inspection, cleaning, and repair. Or email info@aspenenvironmentalservices.com

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Stop the Leaks in Your Building and Improve Your Bottom Line

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A Sound Financial Decision

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Aeroseal is the most effective, affordable, and viable method of sealing duct leaks. Just like anywhere else, ducts in commercial buildings leak. Leaking ducts cost you money via:

  • Increased Energy Consumption – With fan power representing 40-50% of HVAC energy usage, leakage costs can be significant due to increases in fan speed to compensate for leakage; even 15% leakage can lead to an increase in system fan power of 40%
  • Thermal Loss – When supply air escapes, variations in temperature between rooms and floors occur affecting comfort levels in this space
  • Equipment Overload – Your system will run longer than specified to compensate for pressure loss and temperature accuracy; this could lead to increased maintenance costs and premature component replacement
  • Code Issues – Leakage could lead to ventilation and safety code issues relating to exhaust, along with excessive fan power use
  • Airflow Safety – For hospitals, laboratories and manufacturing facilities, the unexpected spread of contaminants and biohazards through back drafting could pose a liability

The computerized duct system inspection performed by Aeroseal will illustrate not only the building leakage percentage, but also the impact that sealing the leaks can have on your company’s bottom line. Using local utility rates, estimated system operating hours, and other inputs supplied by your operations personnel, our software closely calculates all the financial parameters of the project including:

  • Simple payback
  • Benefit-to-cost ratio and ROI

Let us help you secure increased comfort and air quality in your building as your company saves money. Contact your Aeroseal professionals today and we’ll investigate and locate the hidden problem areas in your duct system. We’ll properly diagnose your system and provide you with a cost-effective, state-of-the-art solution to your duct issues that can save you huge capital and manpower expenditures. Aeroseal seals up the leaks. And the wasted money and hazards of faulty ductwork.

Reduce Your Energy and Ventilation Problems

Are you looking for ways to reduce your building’s energy costs, improve indoor air quality (IAQ), fix your venting issues and extend equipment life? Get a good start by taking a closer look at your ductwork. According to the US Department of Energy, a Lawrence Berkeley National Laboratory study found that the leakage rates of commercial buildings exceed the ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) recommended classes by an average of 20 percent. Both new and old commercial buildings exhibit duct system problems including:

  • Increased airflow due to duct leakage
  • Improperly installed duct sealants
  • Damaged sealants: thermal pressure and temperature cycling can damage sealants – especially the rubber-based adhesive found in duct tape -increasing leakage over time

But there’s a simple solution to this costly problem. You can reduce your energy and equipment repair costs resulting from compromised ductwork with the most advanced duct sealing in the industry – Aeroseal Certified Duct Diagnostics and Sealing.

How Does Aeroseal Work?

how it works

The patented Aeroseal duct-sealing technology is an effective and affordable method of sealing ductwork systems within commercial buildings. The Aeroseal duct sealing process begins and ends by conducting a thorough diagnostic test of the duct system. The process works like this:

The diffusers are temporarily blocked while sealant is blown throughout the duct system. Pressure maintained within the system causes the air to accelerate as it exits through the leaks. The Aeroseal particles build up to span and seal the holes – up to 5/8 of an inch – without coating the ductwork. Aeroseal effectively seals ductwork from the inside out by using UL-tested and approved sealing material.

At the conclusion of the process, the diagnostic test is performed again summarizing your building’s amount of leakage reduction to ensure Aeroseal was successful.

Additionally, the Department of Energy declared Aeroseal as one of the most beneficial energy technologies for American consumers.

Source: Aeroseal

Aspen Air Duct Cleaning is an approved Aeroseal Dealer, licensed and ensured, and a member of the National Air Duct Cleaners Association (NADCA) and National Organization of Remediators and Mold Inspectors (NORMI).

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs. Or email info@aspenenvironmentalservices.com.

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AEROSEAL KEY TO $37,000 ANNUAL ENERGY SAVINGS FOR NEW JERSEY HIGH-RISE

Energy Auditors Specify The Use Of Aeroseal To Increase Energy Efficiency And Reduce Duct Leakage by Up to 95%

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Owners of Northgate II, a Section 8 community in Camden, New Jersey, were looking to reduce energy costs associated with its 308-unit apartment high-rise. To receive upgrade funding through the State’s Multifamily Weatherization Assistance Program, they had to prove that upgrades would result in substantial energy savings and a payback period of ten years or less. Energy auditors brought in to evaluate and recommend an effective course of action specified changes be made to the building’s electrical and mechanical systems.
They also insisted that Aeroseal be used to seal leaks throughout the high-rise’s entire duct system.

In Brief
Property Managers: Fair Share Development
Project Contractors: McDonald Building Co.
Property Name: Northgate II
Type: Section 8, 23-story high-rise, 308 units
Goal: Reduce energy usage by 15% or more
Before Aeroseal: Average energy leakage: 971 CFM*
After Aeroseal: Average 83% reduction in CFM loss
Cost savings: $34,000/year from reduced exhaust fan usage. An additional $3,000/year from increased heating efficiency.
Payback: 3-4 years.
*Cubic feet per minute

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An initial audit of the 23-story high rise’s ductwork showed that there were thousands of leaks throughout the building’s exhaust system. As a result, the two large fans used to draw stale air out of each of the individual apartments consumed a lot of energy to do its job. By effectively sealing the leaks with Aeroseal and updating the system’s dampers, the fans’ energy use was reduced by more than 217,000 kw/hours – a savings of more than $34,000 a year in electricity. Building owners also achieved an additional $3,000 a year in savings through more effective heating.

Quotes

“Preliminary testing revealed fairly large gaps throughout the building’s vertical exhaust ducts. The Aeroseal process fixed that problem and in doing so, significantly improved the efficiency of the building’s two exhaust fans. Aeroseal technology played a significant role in helping reduce energy consumption and ultimately meeting the requirements of the State’s Weatherization Assistance Program.”
John Ambrose, McDonald Building Company

“Our multi-family building specialists have a keen interest in ventilation systems and the wasted energy that often results from leaky ductwork. Through our ongoing experience with Aeroseal technology we’ve come to including the Aeroseal process as a standard recommendation when leaky duct systems are a concern.”
Don Casper, energy auditor, Steven Winter Associate

       

Aeroseal – The Technology

  • Developed at Lawrence Berkeley National Laboratory in 1994.
  • Research for Aeroseal was partially funded by the EPA and the U.S. Department of Energy.
  • Aeroseal is the only duct sealant technology that is applied from the inside of the duct system. It is delivered as a non-toxic aerosol mist that seeks out and plugs leaks.
  • Aeroseal has proven to be 95% effective at sealing air duct leaks.

Aeroseal – The Company

  • Aeroseal LLC is a subsidiary of JMD Corporation. The company is dedicated solely to the support of its dealers and the expansion of Aeroseal technology as a primary means of residential and commercial energy conservation.
  • Aeroseal is the sole owner and licensee of Aeroseal technology.
  • Aeroseal technology was bought by Carrier Corporation in the late 1990s. In 2010, Mark Modera, the inventor of Aeroseal, with the support of private equity investors, bought the company from carrier to realize the full potential and benefits of the technology. This lead to the launch of Aeroseal LLC in 2011.

Source: Aeroseal

Aspen Air Duct Cleaning is an approved Aeroseal Dealer, licensed and ensured, and a member of the National Air Duct Cleaners Association (NADCA) and National Organization of Remediators and Mold Inspectors (NORMI).

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs. Or email info@aspenenvironmentalservices.com.

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Aeroseal Case Study — Cambridge Public Housing Complex

Public Housing Complex

With Excessive Duct Leakage Standing in the Way of LEED Certification for a New Public Housing Building, Aeroseal Succeeds Where Multiple Attempts at Mastic Failed

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To be Leadership in Energy & Environmental Design (LEED) certified, the ductwork used to ventilate 40 bathrooms in the newly constructed five-story building had to demonstrate a total leakage rate below 250 CFM. With first test results showing 900+ CFM, it wasn’t even close. Not only were bragging rights to another energy-efficient building at stake, but so were thousands of dollars in federal rebate dollars that the Cambridge Housing Authority (CHA) planned on receiving through LEED certification.  


The mechanical contractor sent in a team of sealers to find and fix the leaks using traditional mastic sealing methods.
 After several costly attempts at manually sealing the ductwork, leakage rates remained much too high to meet building goals. That’s when the CHA decided to take a chance on Aeroseal, a new approach to duct sealing that works from the inside of the ductwork to find and seal the leaks.

Location: Cambridge, MA

Type: 5-story public housing complex

Goal: Meet LEED duct leakage rate of 250 CFM or less

Before Aeroseal: 900+ CFM of leakage

After Aeroseal: 40 CFM of leakage

Results: Reduced leakage by 95%

On a Friday, the Aeroseal team at Aspen Air Duct Cleaning set up their equipment and prepared the ductwork for Aerosealing. The following Monday they began and finished the entire project. The mechanical contractors retested the ductwork and confirmed what the computerized Aeroseal system reported upon completion of the process – Aerosealing the ductwork brought leakage down to 47 CFM – well below the LEED certification requirements. This total included the leakage around the fire damper door access panels. When the inherent leaks around these panels were taken out of the equation, the loss was only 8 CFM for the entire system.

The entire process took two workdays to complete and was conducted while other construction work continued throughout the building. Any concerns over health risks were quickly eliminated after a review of the technology’s Material Safety Data Sheets (MSDS) by the union steward. He found that the sealant was completely non-toxic and entirely safe. The CHA was so pleased with the results that it is currently in discussions with Aspen regarding the possibility of future Aerosealing projects. 

Initially, there was a lot of skepticism among the building engineers that Aeroseal would do the trick—especially when they leaned that the sealant doesn’t coat the entire inside of the ductwork but instead, accumulates around the individual leaks. After seeing the results, they are all now believers and big fans of the technology.”
— Bob Corsetti, Aspen Duct Cleaning

Source: Aeroseal

Aspen Air Duct Cleaning is an approved Aeroseal Dealer, licensed and ensured, and a member of the National Air Duct Cleaners Association (NADCA) and National Organization of Remediators and Mold Inspectors (NORMI).

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs. Or email info@aspenenvironmentalservices.com.

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Aeroseal Frequently Asked Questions

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Aspen Air Duct Cleaning is an approved Aeroseal Dealer, licensed and ensured, and a member of the National Air Duct Cleaners Association (NADCA) and National Organization of Remediators and Mold Inspectors (NORMI). Following are some of our most frequently asked questions.

Aeroseal Frequently Asked Questions

Why should ducts in commercial buildings be sealed?  How much energy does the sealing process save?  How does Aeroseal work?  These are the questions we hear a lot and you’ll find the answers below.  If you have any other questions please do not hesitate to contact us – we’re here to help!

Why should ducts in commercial buildings be sealed?
Duct sealing in commercial buildings cost-effectively saves energy, improves air balance and thermal distribution (comfort and ventilation), and helps comply with building codes and specification for air distribution effectiveness.

How much energy does the sealing process save?
Energy savings are different for each building and HVAC system and obviously depend upon the initial air duct tightness. The Aeroseal Energy Savings Excel spreadsheet can be used to estimate the savings for most types of buildings.

In smaller commercial buildings with air ducts outside the insulation barrier of the building, energy savings can be as much as 30% of HVAC energy use. In large buildings Aeroseal duct sealing can reduce fan-system energy use by as much as 40% and reduce heating and cooling costs by as much as 10%.

As a rough estimate, simple paybacks typically range from 3 to 7 years. In some cases building owners have recovered the investment in Aeroseal duct sealing in less than 18 months.

Is the sealant used in Aeroseal safe?
The sealant material has been certified to UL1381, the industry standard for aerosol duct sealants. It is tested to rigorous requirements for flammability, smoke inhibition, mold growth and durability. The sealant has no OSHA Exposure Limit and no special precautions are required during application. It cures in less than two hours and meets LEED requirements for low VOC emissions.

The dried sealant material is primarily vinyl acetate polymer (VAP), which has been used in chewing gums, latex paints and hair sprays.

How long will the seals last?
The sealant has a life of over 30 years. Scientists at Lawrence Berkeley National Laboratory tested the performance of Aeroseal seals for 4 years under accelerated conditions, and were never able to observe a failure. This corresponds to 100,000 cycles under more severe temperatures and pressures than are found in duct systems.

How do I know if the ducts in my building need to be sealed?
The duct leaks can be uncovered several ways. Aeroseal has developed a simple survey (link) that can accurately predict if an air distribution system is leaking excessively. Another method is to review a Test and Balance Report and compare the flow at the HVAC system supply or return fans and sum of the flows measures at the supply diffusers or return grilles. Testing a sample of duct sections for leakage is an accurate way to identify if ducts are too leaky. Aeroseal technicians regularly perform this test.

How does the Aeroseal process work?
The Aeroseal process seals duct leaks from the inside, using small sealant particles that deposit at the leaks without coating the interior of the duct system.

This is accomplished by pressurizing the duct system with a fog of sealant particles sized to stay suspended in the air until they try to exit the duct system. By blocking all of the intentional openings in the duct system (i.e., diffusers or grilles), all of the sealant-laden air is forced out through to the leaks. As the duct pressure causes the particles to accelerate through the leaks, they stick to the edge and build upon each other until the leaks are sealed. By constantly monitoring the duct pressure and flow, the process-control computer calculates and the displays the remaining leakage in real time. When the sealing is finished, a complete minute-by-minute record of the process is printed, stored on the local computer, and then uploaded over the internet for archival on the Aeroseal server.

How large of a leak can be sealed?
Aeroseal recommends sealing the leaks up to 5/8 inches across. Leaks more than one inch across can be sealed, however the sealing rate varies with the size of the leak times itself. In other words, the sealing time for a 1″ leak is 64 times longer than that for a leak 1/8″ across.

Practically speaking, leaks larger than about 5/8″ across are better suited to be sealed manually if possible.

What types of ducts can be sealed?
Aeroseal is capable of sealing all types of ductwork. It has been successfully applied in rigid metal and flexible air ducts. It has been applied in duct with internal insulation. It has also been installed in duct systems fabricated of ductboard, drywall or masonry blocks.

Aeroseal avoids sealing through VAV boxes or fire/smoke dampers.

What about VAV boxes and fire/smoke dampers?
Aeroseal generally avoids blowing sealant materiel through VAV boxes or fire/smoke dampers, however laboratory and field testing have shown that under the right circumstances this can be done without adverse consequences.

Under no circumstances can sealant material be blown through VAV boxes with reheat coils. Should it be more practical to blow sealant through VAV boxes or fire/smoke dampers, it is recommended to consult with the engineers at Aeroseal LLC.

Do ducts need to be cleaned prior to sealing?
Extremely dirty ducts should be cleaned.  We recommend that the technician assess the condition of ducts prior to beginning to Aeroseal process.

Can I clean my ducts if they are sealed by Aeroseal?
Ducts of all material types can be successfully cleaned after they have been sealed with Aeroseal.

Can Aeroseal be used to seal air leaks in exhaust duct systems serving Type I (grease) commercial kitchen hoods?
We do not recommend Aeroseal to seal air leaks in exhaust ducts serving commercial kitchen grease & heat removal hoods (Type I hoods).  The sealant is not listed or rated for use as a duct sealant for these types of systems, and harsh cleaning chemicals used to clean the ducts could remove or degrade the performance of any seals.

Don’t see the answer to your question? Let’s talk!

Source: Aeroseal

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs. Or email info@aspenenvironmentalservices.com.

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Game-Changing Study Finds Aeroseal a Cost-Effective Solution for Duct Leakage in Commercial Buildings

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Historically, duct leakage has often been viewed as a performance issue rather than an energy efficiency issue. Not anymore! As noted in a recent Building Solutions blog post, duct leakage is actually the Number 1 culprit when it comes to energy waste in commercial buildings. The growing recognition of duct leakage as a major cause of HVAC energy waste provided the impetus for a study on retrofit duct sealing conducted by the Center for Energy Efficiency (CEE) in Minnesota.

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This four-year study and pilot project had several phases, beginning with the characterization and measurement of duct leakage in several types of Minnesota commercial and institutional (C&I) buildings. In the next phase, a subset of the C&I duct systems were sealed using both conventional and aerosol sealing methods. Finally the estimated energy savings and cost effectiveness of retrofit sealing measures were analyzed in order to develop screening criteria to identify cost-effective duct sealing opportunities.

The recently released study findings confirm that duct leakage in existing buildings has emerged as a new energy savings opportunity.  In fact, about 10% to 15% of Minnesota C&I buildings were found to have appropriate operational characteristics and leakage rates that are high enough to justify retrofit duct sealing work with a moderate to good payback of less than 7 years. In addition, the study found that duct sealing from the inside using the aerosol sealing method was effective in a variety of scenarios, often reducing leakage effectively to zero including:

  • Initially tight and leaky ductwork
  • Supply and exhaust ductwork
  • Upstream and downstream ductwork

The Center for Energy and Environment conducts technology and market assessments to identify tomorrow’s best clean energy strategies. This retrofit duct leakage study was conducted for the benefit of Minnesota’s Conservation Improvement Program (CIP) with funding from the Department of Commerce, Division of Energy Resources.

Source: Aeroseal

Aspen Air Duct Cleaning is an approved Aeroseal Dealer, licensed and ensured, and a member of the National Air Duct Cleaners Association (NADCA) and National Organization of Remediators and Mold Inspectors (NORMI).

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs. Or email info@aspenenvironmentalservices.com.

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Medical Center Saves Significant “Green” by Addressing Top Commercial Building Fault

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Mom always scolded us not to leave the refrigerator door open (or we’d let all the cold out AND raise our electric bill). And everyone knows you should turn off the lights before you leave a room to save energy. But let’s magnify little house-based issues to the larger scope of commercial buildings. What do you think the top commercial building fault when it comes to energy waste/loss?  The answer is clear: Duct Leakage.

Berkeley National Labs did a study of the Top Ten building faults by cost (Figure 1), and the faults you would expect are on the list – the lights and HVAC left on when the building is unoccupied, not balanced airflow, dampers not working, etc. However, duct leakage tops the list, with an estimated annual cost of over $2.9 billion per year (which is 53% more than the second most expensive fault).

Figure 1

Figure 1 – Source: Building Commissioning: A Golden Case for Reducing Energy Costs, E Mills, 7/09

Duct Leakage Low-hanging Fruit for ESCOs
A good Energy Services Company (ESCO) is always on the lookout for new ways to save clients’ money. They have lots of choices when it comes to sustainability and energy conservation measures (ECMs). Assessing operating budgets, reviewing overall building performance and evaluating energy usage are just a few. As seen in Figure 1, duct leakage is the “low-hanging fruit” with the biggest, and quickest opportunity for payback.
That’s what was discovered recently at New York State medical center. Aeroseal came to the center and conducted a preliminary analysis of the 100+ year-old facility. The facility manager was aware the hospital had air flow issues, and thus the potential for significant energy savings. The question was how much savings would Aerosealing provide, and how viable would it be to do the work in a 24/7 hospital environment?

Luckily both of these questions were answered affirmatively… and the results were nothing short of astonishing.

Armed with an Energy Model and a Plan
After a close and thorough inspection of the duct systems and sample static pressure testing, the Aeroseal team had the raw data it needed to make its savings calculations and return on investment estimations using a proprietary energy model. (Figure 2)

Figure 2
Figure 2 – Return on Investment graph

“The veracity of Aeroseal’s energy model and the leakage rates they were able to obtain through computerized testing gave us confidence that the estimated savings would be on target. Watching the process, we felt it was less about typical guesswork as it was about experienced testing and extrapolations – and it was backed up with a guarantee that we would get the level of ROI estimated by the final calculations” (ESCO/facility management).

But estimated energy savings was only half the battle. The duct sealing work also had to be performed safely with little to no disruption to the hospital’s day-to-day operations. After reviewing the patented Aeroseal process, including safety, longevity, results, and impact on their operations, hospital administrators gave the green light. The Aeroseal team constructed a plan of attack for the sealing five separate duct systems, and they consulted with hospital personnel every step along the way.

Staff from each unit involved knew when and where the work was taking place well in advance of any activity. They received continual updates throughout the project and were kept abreast of any new developments that might have arisen. Effective and ongoing communication with the administration and the facility managers as well as the staff was key to the project’s success.

Another big advantage to the Aeroseal approach is that it makes the entire duct system easy to access. Sealing from the inside-out eliminates the need to tear down walls, expose ceilings or tear off insulation in order to access the leaks. Not only does this account for the highly effective nature of Aerosealing when compared to tape or mastic, but it also eliminates the majority of disruptions associated with traditional duct sealing activity. In the hospital environment, minimizing the risks associated with such structural demolition was key.

The Results Are In!
When the project was complete, Aeroseal provided facility management with a detailed report of the results. Data taken before, during and after the sealing project showed an original leakage rate of 29,836 CFM (cubic feet per minute), which was reduced to a low 870 CFM. This represented a 97% reduction – 4% more than the originally modeled estimate. Based upon the report provided by Aeroseal, the facility manager was able to show his clients an annual cost savings of $22,694, based upon reduced air loss and lower fan speeds. Payback for the project would be well under seven years.

In addition, the sealing process provided immediate improvements to the comfort level within the hospital. Doctors and other staff members commented on the positive change that the Aerosealing had on ventilation and temperature control.

“There were two primary things that made this project such a success. First, flexibility. The Aeroseal team knew they couldn’t just come in and shut down equipment or section off the hospital to get their work done. Second, was planning. The preparation put into this project before the sealing even began was extraordinary and reflected the team’s understanding of the special requirements demanded by this unique environment. All of the advantages of the technology itself, implemented by a team that understood and met the unique requirements of a hospital environment made this a tremendous success.” – ESCO/Facility director

Source: Aeroseal

Aspen Air Duct Cleaning is an approved Aeroseal Dealer, licensed and ensured, and a member of the National Air Duct Cleaners Association (NADCA) and National Organization of Remediators and Mold Inspectors (NORMI).

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs. Or email info@aspenenvironmentalservices.com.

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Attention Commercial Building Owners and Facility Managers: About Ventilation for Commercial Buildings

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Chances are, your building’s ventilation system is broken.  According to the EPA and others, 80% of today’s buildings have ventilation shafts that leak an average of 15% or more. These leaks are the primary cause of ineffective building exhaust.

Like sucking air through a straw with holes in it, no matter how hard you try, getting the straw to work can be an impossible feat…until you seal those holes.

Symptoms of Poor Building Ventilation

Unfortunately, poor building ventilation can cost you plenty. Research has clearly linked faulty building ventilation to higher energy costs, added maintenance costs, chronic health issues, reduced worker productivity, increased absenteeism, lower student scores, and indoor comfort problems. Some common signs of poor ventilation include:

  • Persistent Mold & Mildew – Especially in Bathrooms
  • Chronic Odor Issues
  • Higher than Normal Energy Bills
  • High Rate of Worker Illness & Absenteeism
  • Noisy Exhaust Systems

An Easy Solution to Poor Building Ventilation

Most experts agree, the reason most U.S. buildings today are plagued with poor ventilation is because there simply wasn’t a practical solution. With most ventilation ductwork hidden behind walls or otherwise hard to access, finding and sealing the leaks responsible for the problem was just too expensive and too disruptive to even consider – so for decades, ventilation issues were simply ignored.

Aeroseal duct sealing technology changed that. Now, sealing the leaks that cause poor ventilation is a straightforward, cost-effective process. Since Aeroseal is applied from the inside of the ductwork, finding and sealing leaks is done with minimal if any disruption to existing structures. Projects can often be completed in as short as a single afternoon. A computerized report shows the actual before and after results.

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A Proven Strategy for Ventilation Issues

Aerosealing ventilation shafts solved chronic mold issues at the Capital Plaza Hotel in Frankfort, KY. It reduced energy costs for the Carlyle Towers High-Rise in Caldwell, NJ, and allowed Condell Hospital in Libertyville, IL to meet pharmacy exhaust regulations.

Source: Aeroseal

Aspen Air Duct Cleaning is an approved Aeroseal Dealer, licensed and ensured, and a member of the National Air Duct Cleaners Association (NADCA) and National Organization of Remediators and Mold Inspectors (NORMI).

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs. Or email info@aspenenvironmentalservices.com.

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Duct Sealing a Logical Add-On to Duct Cleaning, Officials Say

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At Aeroseal, we pride ourselves on the “1-2 punch” that cleaning and sealing ductwork offers homeowners and business owners.

You probably already know the benefits of cleaning air duct systems in homes and buildings. Unfortunately, cleaning a duct system alone is only “fixing the symptom” (e.g. the ducts are dirty). It does not prevent the ducts from getting dirty AGAIN.

Good news! Aeroseal makes it extremely easy to effectively clean ducts AND prevent them from getting dirty again, leading to improved air quality (less dust and airborne allergens) in homes and buildings.

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Furthermore, SNIPS magazine recently published “Duct Sealing a Logical Add-On to Duct Cleaning, Officials Say,” by Michael McConnell.

In the article, McConnell writes, “For a growing number of duct cleaning companies, a project isn’t finished until that newly scrubbed ductwork and its HVAC system have been sealed. Sealing ductwork involves applying products such as tapes, coatings and sprays to the ductwork’s exterior or interior to ensure homeowners and building owners get all the HVAC performance they expect.”

NADCA Executive Director Kristy Cohen adds, “[Duct Sealing] is a service that’s growing in popularity.”

She points out, “We’re seeing an increase in the number of our NADCA members who are in that duct-sealing space. It’s something that they are looking at as a natural progression.”

Source: Jonathan Tharp, for Duct News and Aeroseal

Aspen Air Duct Cleaning is an approved Aeroseal Dealer, licensed and ensured, and a member of the National Air Duct Cleaners Association (NADCA) and National Organization of Remediators and Mold Inspectors (NORMI).

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs. Or email info@aspenenvironmentalservices.com.

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You can read the original full SNIPS magazine article at: http://www.snipsmag.com/articles/92554-duct-sealing-a-logical-add-on-service-to-cleaning-officials-say